Something new

For discussing B&G MS-I/MS-II set-up and tuning of fuel parameters (including idle valves, etc.).
Forum rules
Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.

If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.

If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days

The full forum rules are here: Forum Rules, be sure to read them all regularly.
Post Reply
Bluehaze
MegaSquirt Newbie
Posts: 33
Joined: Thu Apr 28, 2011 3:07 pm
Location: Melbourne, Australia

Something new

Post by Bluehaze »

Been tuning the car in the shed now for a few days. Every session I've managed to get the motor running better and better. Every cold start I've taken the opportunity to tweak the cranking PW and ASE, then the WUE followed by no-load dialling-in of the VE table to keep the signal from my NB sensor close to 0.5 volts, just to give a datum point to know relationships between PW's, speed density and AFR. The learning process has been almost painful in it's intensity, both satisfying and fun.
Then the other day I was playing around, and decided to shut down (heater hose had sprung a leak). Went to re-start and she'd kick over while cranking then die. Strange, checked the ASE at hot and saw it set to 100%, or none, and had a couple more goes. This is wierd, started tweaking ASE and hot start settings with little or no difference. After about ten minutes, noticed the fuel pumps sounded a bit different, like... They had no load...oh dear. I am a goose. Yes folks. Out of petrol. :roll:
1961 Holden with 3.3l inline 6 megasquirt fuel and ignition.
Top
smokey212
MegaSquirt Newbie
Posts: 18
Joined: Mon Jul 16, 2012 1:02 pm

Re: Something new

Post by smokey212 »

Mmmmmmm ain't got no gas in it mmmmmmm
Top
Bernard Fife
Master Squirter
Posts: 475
Joined: Thu Oct 29, 2009 12:54 pm

Re: Something new

Post by Bernard Fife »

Bluehaze,

I think most of us have been there. I recall a few years ago when I was getting my car out for the first time in the spring. I had done a fair bit of work over the winter, and *thought* I had everything back in order. When I started up the car, the idle was smooth and steady, but the idle speed was lower than I remembered, so I adjusted the throttle stop screw and went to get gas (a mile or so away). I noticed on the way to the gas station that the car didn't want to spin the tires very easily even on the cold street tires, which was unusual. I could still spin the tires, but only by trying. Usually I have to work hard and pay a lot of attention to keep them planted (~500 HP in a ~2600 pound car). Maybe the car just wasn't as fast as I remembered!

When I got back home, I spotted that one of the injector fuses (for one bank of injectors) was missing, and I was actually running on 4 cylinders! I likely had about 225 horsepower. Whoops! I put that fuse back in and the car felt like a tiger again, thankfully. But I am just a little bit smarter now...

Lance.
"Never wrestle with pigs. You both get dirty and the pig likes it.” - George Bernard Shaw
Top
Post Reply

Return to “Tuning Fuel and Air”